Auxiliary starting means for internal-combustion engines



-Jan. 20, 1931. i c. F. HEYwooD 1,789,537 AUXILIARY STARTING MEANS- FORINTERNAIL' C OMBUSTION ENGINES A Filed July 26, 1924 T .r I

A 4o engine.

operated by a sprocket'wheel 9 mounted upon the spindle 10 of the saidvalve, 11 being a spring housed-in the said cover plate and maintainingthe said valve seated in its casing;V 12-is an inlet pipe entering thecover plate of the saidcasing and branching from a pipe 13 connected toa storage tank 14 adapted to contain iluid such as air under 2opressure, the said pipe 12 being interrupted by a manually'operablevalve 15 which is normally closed andv maybe of anysuitable type, 16being the operating button or plunger of the said valve which effectsthe opening thereof when depressed.

The ipes 2, 3, 4 and 5 are associated with ports 1 18, 19 and 20 in thewall ofthe caslng- 6 and the said disk valve 7 is provided with a' port21 adapted to co-act` with the ports 17, 18, 19 or 2O at differentvpositions to which the said disk valve may be rotated,

so' that fluid under pressure may be admitted to the said cylinders inthe required order on their power strokes .as the said valve rol5 tatesand as will be well understood without 4 further explanation, thelrotation of theV said -valv'e being effected by means of a chain 22extending over `the sprocket '9 and a sprocket 23 which is` geared tothe cam shaft 24 of the In the starting of the engine the depression ofthe plunger16 opens the valve 15 provided the engine is not on deadcenterl and admits `fluid under pressure to one of the cylinders`according to the position of the valve opening 21 relative vto one orother of the ports 17, 18, 19 or 20, the said valve being timed so thatthe' port Aso disclosed will be one associated with one of the raisedpistons ready to perform the power stroke. This pressure Willresult inthe rotation of the said crank shaft, and,- the fluid under pressurebeing admitted to other l of thel cylinders in their proper order orcycle, rotation of the engine `results all conditions, such as ignition,being 7 of course correct forA that purpose.

Should the engine be standing on dead centers, no fluid under pressurewill pass the *5 valve opening 21 or the ports 17, 18,19 or 20, u but itwill pass through one ofthe ports 38 Lorn39 then through thecorresponding outgoing pipe 32 or 31 into the corresponding plurligercylinder, or booster which I provide. In igure 5, the engine crank isshown on will be continued until starting of the engine` dead centers,with the piston of cylinder just goingto begin its power stroke; thevalve opening 21 at this moment is exactly between the ports/18 and 17,and therefore no iuid will' pass the valve opening 21, but just in thisposition fluid is free to pass through port 38 and through pipe 32 tothe cylinder 27.

The piston 28 is then forced out and the piston rod associated with itforcesthe main crank shaft 25 just beyond the dead center whereby themain engine cylinders begin operation, the cylinders 26 and 27 thereuponbecoming compressor cylinders.

In Figures 1 and 5 this device is indicated as comprising. opposedcylinders 26 and 27 enclosingpistons 28 coupled to a crank 29 on the endof the crank shaft by connecting rods 30, 31 and 32 being inlet pipesleading from ports 33 and 34 in the valve casing 6 'and opening intochambers inthevheads 35 and'36 of the saidcylinders26 and 27, whichheads house non-return po pet valves 37.

3 8 and 39 are ports in t e rotary valve 7 adapted to co-act with .oneor other of the ports 33 and 34 in the valve casing during the rotationof the said valve whereby, if the engine be atrest in a dead centerposition or the requisite port 17, 18, 19 or 20 be closed against theadmission of fluid to the engine,

one or other of the said ports 33 or 34 will be' openpermittingadmission of fluid -under pressure to one or other of the cylinders 27or 28 vso that the piston thereof may be4 actuated to efect theinitialrotary movement of the crank shaft, which will accordingly resultin the o ening of the required port ,17, 18, 19 or 20 or the starting ofthe engine.

40 and 41 are inlet pipes through which the fluid enters thesaid'cylinders 26 and 27 upon the forward motion of their pistons, whenacting as compressors.

The arrangement illustrated also permits of the rechar 'ng of the tank14, after the starting up o the engine, as the booster` may vbe utilizedas a compressor as previously stated,A delivering fluid to the said tankthrough the pipes 42 and 43 by virtue of the llO operation of inlet andoutlet valves 44 and 45.

'arranged in the cylinder'heads 35. and 36 of the said booster. In thearrangementl of Flgure 6, the comressing feature is dispensed with and acylbyl a rod 50 which is engaged bya tappet 51 on lnder 46 isillustrated having a piston 47 i therein operable by fluid underpressure the other end f the piston rod 52 t'o transmit f motion to thesaid slide valve in one direction, the motion thereof in the otherdlrectlon vbeing effected by a further-tappet 53 on the said valve rod.

4Admission of `fluid' under pressure to the valve chamber '.54 iseffected through a pipe.V

' '32a communicating with thev valve casing 6,

-to thecrank s l fected-through the medium of thely wheel 57 which isnotched at 58 to receive a pawl 59 mounted on the end of the pistonrod'52 and normally depressed by a springl may co-act with the said notethe forward movement'of the piston 47 to eiect the rotation of the saidViiy wheel only when the engine has its cranks on dead centers and withthe asor'in an inoperative position, sistance of the pressure operatedpiston 47 which is required to eilect the initial rotation thereof.' Inthis arr-an ementl the association of the booster with t e crank shaftis localized due to the limited arc through` which the; notches 58Iextend, .so that this operation is only Y effective vwhen therelativepositions wheel, an arm 61 is l said pawl rides and disassociation'ofthe said pawl from the said fly wheel when the paw'l is moved to are--tracted position i -ter and this is -somewhat modified in its con- I` 4oA pipe 12 is-secured by means of a pi tering the valve chamber 54. In .t

the booster plunger always operates when of the parts are such -7wherein instead o that assistance thereof is necessary. To preventdanger 'or damage to the booster by back firing of the engineandofrotation of the" iiy provided over which the which effects thefralsingconsequent reversal and asshown. n Y.. In this form.- the boosterplungeroni operates when the'engine crank is on dea cenf nections in thearrangementshow'n in Figure the pipe 32a fromv the direct connectionfrom the c62 en is form valve casing 6, a.

the starting button is pressed; ut .of curse only turns the engine crankwhen it 1s on dead centers.

AIn Figure@ 8f an arrangement is shown whereby board of a car in whichthe. engine maybe installed, the said support carrying a 'frame 64'-4slotted V'at 65 `to form a gmdeway pawl- 66 mounted on the lower end ofa foot i Voperableplunger 67, which plunger maybe depressed. against thetensionfoa return n ,uno-'J spring 68. A69. is a spring Vadapted todepressl the said pawliintoithe notches 58 of the ily wheel57, whenthesad 'pawl isVY moved be yond a pin 70 which corresponds to the arm I 61shown in VFigure- 6. This device,.when actuated, rfo'rms a,similar'unction to that ofthe evi e wheel as will be readily seen'.

shaft 25 in case the parts are in.

of the piston 47 `in this casetheauxilia'ry impulse device maybe footoperated instead o fby the fluid pres-f fora also localized in itsassociationwith the ily' Utilizing the booster or, auxiliary 'starting idevice 'as suggested, ensures the setting in motion vofan engine. so. euipped irrespective of dead center norma y opposing the s' artingoperation and also assists 1n the overcoming of initial inertia of theengine and resistance which may be offered to the starting thereof; sothat a starter with which the' said linvention is employed will belenabled to function much more readily than .would o herwisebe thecaseand will be more re liable and less subject to sticking orinterruption in -its operation as a result of vthe as-.

sistance rendered by theboosterg This inventionmay be developed'withinthe scopeof V,the appended vclaimsfwithout ,departing from the essentialvfeatures of the invention,

illustrative and not in alimiting-sense, except as necessitated by theprior art.,

' What I claim is s 1 In combination, an engi-ne comprising a pluralityof cylinders, pistons slidably l l and it is desired that theVspecifil'cation and drawing beread as beingmerely 'mounted in saidcylinders, a crank shaft connected to said pistons, -adistributoradapted to supply a pressure fluid to said cylinders, a

'pressure tank connected ltosaid distributor, and a pressure Voperatedturn-over device having direct uid'communication with said distributorand connected directly to -sa-id crank shaft. 2. In combination, anengine comprising a pluralityv of cylinders,v pistons slidably tosupply'a pressure lfluid-to said cylin ers, a pressure tank connectedtosaid distribu tor, a 'starting crank carried by said crank shaft, anda pressure opera-ted turn-over de-l vice havin .direct iuidcommunicationwith said distri utor -andliliked to'said crank.v 3. Incombination, an engine comprising a plurality of cylinders,pistons-'slidabl mounted 1n said cylinders, a crank sha t mounted insaid cylinders, a'crank shaft connected-'to said pistons, a distributorada ted connected to said pistons, a distributor adapted ztlflinders, l

'stributor, 'a `com tion wi th said ta the movableelement of -saidcompressor bea pressure tankfconnected -to said ressorhaving a connecingconnected to said crank shaft,'a` further `i connection from said tank-to-said distributor and from said distributor to saidcompressor forstarting th latter, a valvenmmber inl Ato supply a pressureiiuidftosaidfforchargingthe same,

said distributor controlling the connections v to;the. cylinders and'compressor, sgid valve.

memberlbeip geared tothe, engine .1n a. man-v ner-to. opent when the,crank shaft is, on dead. center.

4.,- lnlcombinatioman engine com rising apluralityrof cylinders, dablye'connection tothe compressor`newmediagaid.cyliedersegeralikishafisae'?? "nected to said pistons, adistributor ada ted cylinders and turn-over device and' includ-l tosupply a. pressure Huid to said cylin ers,

a pressure tank connected to said distributor a com ressor having alconnection with said tank or charging the same, the mov-- able elementof said compressor being conn'e'cted to said crank shaft, and a furtherconnection between' said tank and compressor for starting the latter,said connection passing through said distributor.

5. In combination,'a`n engine comprising a. plurality of cylinders,pistons slidably mounted in said cylinders, a crank shaft connected tosaid pistons, a tum-over device connected to said crank shaft, apressure fluid distributor having Huid connections `to said in a valvecontrolling said connections, said va ve bein geared to the engine in amanner to open t e 'iuid connection to said turn- 'over' device whenthe'crank shaft is on dead center. l

In testimony whereof I aiix my signature.

CHARLES FREDERICK HEYWOOD.

